25243769 has 2 divisors, whose sum is σ = 25243770. Its totient is φ = 25243768.

The previous prime is 25243753. The next prime is 25243781. The reversal of 25243769 is 96734252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 8922169 = 4040^2 + 2987^2 .

It is a cyclic number.

It is not a de Polignac number, because 25243769 - 2⁴ = 25243753 is a prime.

It is a super-2 number, since 2×25243769² = 1274495746650722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25243069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621884 + 12621885.

It is an arithmetic number, because the mean of its divisors is an integer number (12621885).

Almost surely, 2^25243769 is an apocalyptic number.

It is an amenable number.

25243769 is a deficient number, since it is larger than the sum of its proper divisors (1).

25243769 is an equidigital number, since it uses as much as digits as its factorization.

25243769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 25243769 is about 5024.3177646323. The cubic root of 25243769 is about 293.3490813113.

The spelling of 25243769 in words is "twenty-five million, two hundred forty-three thousand, seven hundred sixty-nine".